Abstract 1. 1. Lipids from eggs of the boll weevil ( Anthonomus grandis Boheman; Coleoptera, Curculionidae) were fractionated into individual classses by a combinated fo silicic acid and Florisil column chromatography. Triglycerides were the predominant fraction, and accounted for more than 70 per cent of the neutral lipid matter. 2. 2. The fatty acid content of adult males and females and eggs resembles that of the diet when dietary fat content is high. Female feeding on low fat diets deposit lipids in the egg yolk which contain principally those fatty acids that the adult can synthesize from non-lipid components.